Vaccinating-tool.



VACCINATING TOOL. (Application med mr. 5,.'1901.)

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UNTTED STATES PATENT OFFICE.

ELIJAH MARK HOUGIITON, OF DETROIT, MICHIGAN, ASSIGNOR TO y PARKE, DAVIS da COMPANY, OF DETROIT, MICHIGAN, A CORPO- RATION OF MICHIGAN.

VACClNATlNG-TOOL.

.SPECIFICATION forming pari'. of Letters Patent No. 715,661, dated December 9, 1902.

Application led March 5. 1901. Serial No. 49,834. (No model.)

To all whom it may concern: n

Be it known that I, ELIJAH MARK HOUGH- TON, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Vaccinating-Tools, of which the following is a specication, reference being had therein to the accompanying drawings.

The invention has reference to a Vaccinatin g-tool particularly designed for-ad ministeringvaccine in solid form to horses and cows; and it consists in the peculiar construction and the novel arrangement and combination of its various parts, as will be more fully hereinafter set forth.

In the drawings, Figure l is a vertical central section through a tool embodying my invention. Fig. 2 is a sectional View of the lower end of the tool, showing the position of the parts at the time the vaccine is discharged; and Fig. 3 is a section on line a; Qc, Fig. l.

In construction the tool comprises a handlesection A, preferably cylindrical in form, holloW, and open-ended, as shown. The lower end of the handle or barrel is tapered, as indicated, and provided With an internal screwthread a. At the opposite end the handlesection is provided with a similar internal screw-thread, which engages with the thread upon a cap C, which closes the end.

D designates a hollow lancet having the sharpened point o and at the opposite end a head E, threaded, as shown, and adapted to engage within the tapered end of the handlesection.

F is a plunger' extending through an aperture d in the cap, through and beyond the handle-section, and partially Within the hollow lancet, as indicated in Fig. 1.

F is a collar or stop upon the plunger, Which is adapted to abut against the cap' and limits the outward movement of the plunger.

Gis a spiral spring which bears against the shoulder upon the plunger at one end and against the barrel at its opposite end, the spring acting normally to retain the plunger in the position shown in the figure last referred to.

As thus constructed it will be observed that normally the plunger extends only part way within the hollow lancet, thus forming a vaccine-chamber in the lancet in advance of the plunger, inv which the charge to be administered may be placed.

I have also provided means for holding the vaccine in convenient position for use. The holder is preferably of the type indicated, the same being in the form of a partition or diaphragm H, fitting within the handle-section and carried by the latter in proximity to, but

tition is centrally apertured to` permitof the insertion of the spring therethrough and is also provided with one or more apertures e, which are adapted to receive small vaccinevials I, as indicated in Fig. l. The holder is placed in such relation to the cap that when the latter is in place it not only serves as a closure for the end of the handle-section, but also acts to retain the vials in place in the holderthe lower face of the cap bearing directly against the vials or the Stoppers therein.

In practice when a charge of vaccine is to be administered the cap is removed from the barrel, the vial containing the vaccine in stick or spherical form withdrawn, and the parts are then replaced and the vaccine in the solid form inserted within the vaccinechamber Within the lancet. Upon insertion of the latter in the animal the plunger is operated and the charge delivered.

What I claim as my invention is l. In a vaccinating-tool, the combination with ahollow handle-section, of a plunger sliding therein, a cap covering the inner handlesection end, and a stationary vial-holder carried by said handle-section in proximity to and independent of the cap.

. 2. In a vaccinating-tool, the combination with a hollow open-ended handle-section, a hollow lancet at one end thereof and a detachable apertured cap closing the opposite end, a plunger extending through the cap and engaging the lancet,and a centrally-apertured partition fixed within the handle in proximity to the cap, said partition having'one or more forth.

3. In a vaccinating-tool, the combination independent of, the cap. As shown, this parapertures formed therein for the purpose set IOO With a hollow cylindrical handle-section or the plunger at one end, for the reception of ro barrel and the hollow lanoet detaehably eon- I the Charge to be administered.

nected to one end thereof, of 'an apertured cap In testimony whereof I ax my signature covering the opposite end, a plunger Within in presence of two Witnesses.

the barrel having one end projecting through and beyond the cap and terminating normally ELIJAH MARK HOUGHTON' at its opposite end at a point a considerable Witnesses:

distance from the free end of the lancet form- L. J. WHITTEMORE, ing a tubular retaining-chamber, Closed by l 'l-I. C. SMITH. 

